When gas prices are high (and don't fool yourself—they will be again!), nasty people have been known to steal someone else's license plates, fill their own cars with gas, drive off without paying and let the gas station cameras capture the stolen license plate number. Install a set of security screws to stop the crooks before they get their sticky fingers on your plates. The screws are cheap, easy to install and available in a style to fit your vehicle. The kits come with a security wrench; keep it in a safe place so you can change plates when they expire.